Head hair and lifted ears make the baby’s face begin to look more human.
Week 18 - 20
- Stethoscope can detect the beating of the heart.
- The baby’s movements may be felt by the mother.
- Eyebrows and eyelashes appear.
- A fine downy hair appears all over the baby’s body.
- A protective coating of vernix, a creamy substance, covers the baby’s thin, shiny skin.
- Teeth fully develop in the baby’s gums
Week 21 - 25
- The baby is about half as long as it will be when it’s born.
- Breathing movements begin.
- The mother may be able to feel the shape of the baby through her abdomen.
- The baby’s eyes can open now.
The baby has developed enough to survive outside the womb with special care. From this point on, the baby continues to grow, strengthen, and prepare for life in the world.
- Skin turns from red to pink and wrinkles smooth out as the baby builds fat stores.
- The baby begins to taste and becomes aware of sounds outside the mother.
- In boys, the testicles begin the descent into the scrotum.
- The pupils in the baby’s eyes can react to light.
Week 36 - 40
- The baby’s lean body gives way to plumpness.
- The downy hair or lanugo that once covered the baby begins to disappear, though the vernix layer remains.
- In girls, the labia majora has developed and in boys, the testes are now in the scrotum.